Die for making rolled forcings



(No Model.)

G. F.. SIMONDS.

DIES FOR MAKING ROLLED FORGINGS.

No. 348,790 Patented Sept. 7, 1886.

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- UNITED STATES PATENT OFFICE.

GEORGE F. SIMONDS, OF FITCHBURG, MASSACHUSETTS.

DIE FOR MAKING ROLLE D FORGINGS.

SPECIFICATION forming part of Letters Patent No. 348,790, datedSeptember 7, 1886.

Application filed April 8, 1886. Serial No. 198,254. (No model.)

To aZZ whom, it may concern:

Be it known that I, GEORGE F. SIMoNDs, of Fitchburg, in the county ofVorcester and State of Massachusetts, have invented newand Improved Diesto be Used in Machines for Making tolled Forgings, especiallyheavy work;and I hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, making part of this specification, in which Figure l is aperspective view of a portion of a die embedded in its holder or socket.Fig. 2 is an enlarged view of a portion of the die removed from itsholder, and showing a modification of the serrations or teeth on thefaces.

My invention relates to dies to be used in conjunction with theforging-machine patented by me June 9, 1885, No. 319,752, and has forits object to provide a die especially adapted for the forging of heavywork.

My invention consists in the peculiar forma tion of the working-faces ofthe die and the grooves for insuring the proper rotation of the work,all of which will be hereinafter described, and specifically pointed outin the claims.

In order that those skilled in the art may make and use inyini'ention, Iwill proceed to describe the exact manner in which I have carried itout.

In the said drawings, a is the platen, and b the die proper. Theworking-faces of this die consist of three parallelograins, h 1 the central one, it, lying in a horizontal plane, and

the other two parallelogram faces, h h falling away from the centralhorizontal parallelogram, the planes intersecting along the edges. Theparallelograms If, which have the pitch given them that may be desired,are provided with grooves or irregularities z i, so cut that theygreatly deepen and widen from the center toward the outer lines of thedie-faces. This gradual deepening and widening of the grooves allows thetwo edges of the die-face to heavily engage the heated blank, while thatportion which is close to the finishing-face is not so indented as tooffer any difliculty in erasing the groove-marks.

In Fig. 2 I have shown a modification of this die-face, wherein groovesof a lighter de scription are passed across the horizontal parallelogramh of the face, to be used in instances when the work need not besmoothly finished on leaving the die.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. Dies for machines for making rolled forgings having a centralparallelogrammic face arranged between two parallelogramniic facesfalling away from the central face, as set forth.

2. Dies for machines for making rolled forgings having cross-groovesdeepening from a central longitudinal line in each direction toward theouter lines of the dies, substantially as described.

GEO. F. SIMONDS. YVitnesses.

G. E. DOWNE, H. S. DowN

